Implement for cleaning boiler-tubes, &amp;c.



No. 69|,475. Patented Jan. 2|, I902.

- W. LDMBARDO.

IMPLEMENT FOR CLEANING BOILER TUBES, 8L6.

' (Application filed Apr. 11. 1901.) (No Model.)

UNITED STATES- PATENT OFFICE.

IVILHELM LOMBARDO, OF BUDAPEST, AUSTRIA-HUNGARY, ASSIGNOR TO J OSEFEISELE, OF BUDAPEST, AUSTRIA-HUNGARY.

IMPLEMENT FOR CLEANING BOILER-TUBES, 84,0.

SPECIFICATION formingpart of Letters Patent No. 691,475, dated January21, 1902.

Application filed April 11, 1901.

T0 aZZ whom it may concern.-

Be it known that I, WILHELM LOMBARDO, a subject of the Emperor ofAustria-Hungary, residing at Budapest, in the Empire of Austria-Hungary,have invented a certain new and useful Improved Implement for CleaningBoiler-Tubes and the Like, (for whichI have applied for a patent inHungary, Germany, England, France, and Belgium,) of which the followingis a specification.

The present invention relates to an implement for removing incrustationfrom the exterior surfaces of fire-tubes of steam-boilers, cooking anddistilling apparatus, and the like.

The said implement consists of a number of hammer-shaped scrapersoscillating upon a rigid or flexible band of rod and held byspring-pressure in a position perpendicular to the band or rod.

The construction and action of the device is illustrated in the annexeddrawings.

Figures 1 and 2 represent a front and side elevation thereof,respectively; Figs. 3 and 4, sections on a larger scale on the lines AB, Fig. 1, and G D, Fig. 2, respectively, while Fig. 5 shows the actionof the device.

As will be seen from the drawings, a number of hammer-shaped scrapers b,each having two sharp faces 0 c, are pivoted to a band or rod a ofsuitable breadth, which may consist of several parts linked together inthe manner of a link chain. The said hammers b are so mounted that whenthe rod or band a is in a vertical position their axes of oscillationand faces 0 c are horizontal. Each of the hammers or scrapers 17,adapted to oscillate on the pins (1, is normally held in a horizontalposition by a helical spring g, passing through the shank-leverf andsurrounding the pin d, the fiat ends it of the said springs bearingagainst the rod a; but the scrapers can yield to pressure, acting in oneor the other direction of rotation. v

In use the device is introduced from above into the spaces between thetubes r, Fig. 5, and moved alternately upward and downward. On thelatter movement taking place each of the scrapers will first strikeagainst the crest of a tube, then slowly revolve in an Serial No.55,345. (No model.)

upward direction, and in doing so clean the upper half of the tube. Onthe continued downward movement of the rod the scraper will slide offthe first tube and strike with the greatest spring-power against thenext tube below it (see position indicated by dotted 5 5 the tubeswithout deteriorating the period of I action of the latter.

Instead of being operated by hand the apparatus can be operated by amotor driven by means of electricity, steam, or compressed air, in whichcase the reciprocating movement of the scrapercarrier can be obtained bymeans of a suitable crank or eccentric mech anism with the aid ofsuitable transmissiongear. The motor may be placed upon the tubes andprovided with devices for obtain ing automatically the movement desired.

What I claim, and desire to secure by Letters Patent, is-

In a device for cleaning the exterior surface of boiler-tubes, thecombination of a longitudinally-reciprocatory power-transmitter, ascraper-arm, a pin extending loosely through a passage in thescraper-arm and having its ends secured in lugs or flanges extendingoutwardly from one face of the power-transmitter, and a spring extendingthrough a passage in said scraper-arm and having its ends coiled aboutsaid pin and bearing against the powertransmitter on opposite sides ofthe scraperarm.

In testimony whereof I have hereunto set my hand in the presence of twowitnesses.

VVILHELM LOMBARDO.

Witnesses J OSEF WIRKMANN, MoHNARoDiiY.

